1131001090 has 16 divisors (see below), whose sum is σ = 2070308160. Its totient is φ = 444732400.

The previous prime is 1131001019. The next prime is 1131001097. The reversal of 1131001090 is 901001311.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1131001097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 957886 + ... + 959065.

It is an arithmetic number, because the mean of its divisors is an integer number (129394260).

Almost surely, 2^1131001090 is an apocalyptic number.

1131001090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131001090 is a deficient number, since it is larger than the sum of its proper divisors (939307070).

1131001090 is a wasteful number, since it uses less digits than its factorization.

1131001090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917017.

The product of its (nonzero) digits is 27, while the sum is 16.

The square root of 1131001090 is about 33630.3596471997. The cubic root of 1131001090 is about 1041.8879322890.

The spelling of 1131001090 in words is "one billion, one hundred thirty-one million, one thousand, ninety".